﻿namespace Util.Data.Sql.Builders.Conditions; 

/// <summary>
/// 空查询条件
/// </summary>
public class NullCondition : ISqlCondition {
    /// <summary>
    /// 封闭构造方法
    /// </summary>
    private NullCondition() {
    }

    /// <summary>
    /// 空查询条件实例
    /// </summary>
    public static readonly NullCondition Instance = new NullCondition();

    /// <summary>
    /// 添加到字符串生成器
    /// </summary>
    /// <param name="builder">字符串生成器</param>
    public void AppendTo( StringBuilder builder ) {
    }
}